Lens driving device, camera module and optical apparatus

EP4727146A3Pending Publication Date: 2026-06-24LG INNOTEK CO LTD
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Patent Information

Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
LG INNOTEK CO LTD
Filing Date
2016-04-04
Publication Date
2026-06-24

AI Technical Summary

Technical Problem

Conventional camera modules with auto focus (AF) and optical image stabilization (OIS) functions suffer from oscillation due to natural vibrations and spatial restrictions that limit the length of the elastic member.

Method used

A lens driving device with a modified support member design, featuring non-parallel support units with varying elastic moduli and orientations, including a first support unit with a lower elastic modulus disposed closer to a sensor, minimizes oscillations by optimizing the elastic member's shape and length.

Benefits of technology

The solution effectively reduces oscillation phenomena during auto focus feedback control, ensuring stable AF and OIS performance by securing a sufficient length for the elastic member.

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Abstract

1. A lens driving device, comprising: a base (1500); a bobbin (1210) disposed on the base (1500); a first coil (1220) disposed on an outer peripheral surface of the bobbin (1210); a magnet (1320) facing the first coil (1220); and a lower support member (1900) coupled to the bobbin (1210), characterized in that the bobbin (1210) comprises a support portion (1820) supporting the first coil (1220), a separating space (1830) is formed in the support portion (1820), the lower support member (1900) comprises an outer side portion (1911), an inner side portion (1912) coupled to a lower surface of the bobbin (1210), and a connecting portion (1913) connecting the outer side portion (1911) and the inner side portion (1912), a first part of the first coil (1220) is exposed through the separating space (1830) when viewed from a bottom side of the bobbin (1210), and at least a part of the connecting portion (1913) overlaps the first part of the first coil (1220) in an optical axis direction.
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